1 APPENDIX. 



itself by subsequent propagations." Philosophical 

 Transactions, vol. 77, p. 253. 



In the history of the salmon, we have yet to learn 

 the age to which they live, the size to which they 

 increase, and the circumstances which influence their 

 growth. A grilse which had been caught, weigh- 

 ing three pounds and a half, in one river, in March, 

 when again taken, in the March following, was 

 found to weigh seven pounds ; while another caught 

 in a different river, on the 7th of February, weighing 

 seven pounds, when again taken, on the 17th of 

 March, weighed seventeen pounds and a half, having 

 increased ten pounds and a half in thirty-eight days. 

 We have also yet to learn if the salmon, which has 

 been so peremptorily declared to be a sea fish, by 

 Dr. Fleming though it appears from his own 

 statement to live seven months out of twelve in 

 rivers ever proceeds to sea farther than a short 

 distance along the coast at the mouth of the river 

 in which it has been bred. An instance of one having 

 been seen, or taken in any manner, at sea, two 

 miles from the shore, has never come to the writer's 

 knowledge. 



In the Linnean arrangement, fishes are divided 

 into four CLASSES, according to the want, or the 

 position of the ventral fins. To the CLASS, ABDO- 

 MINALES, having the ventral fins behind the pectoral, 

 and on the abdomen, the genus Salmo belongs ; 

 which, according to Sir Humphrey Davy, "may 

 be defined as a genus having eight fins, the one 

 above the tail fleshy and without spines." Of these 



